Gentle ping 2017-12-19 13:02 GMT+03:00 Timofey Titovets <nefelim4ag@xxxxxxxxx>: > 1st patch, remove 16MiB restriction from extent_same ioctl(), > by doing iterations over passed range. > > I did not see much difference in performance, so it's just remove > logic restriction. > > 2-3 pathes, update defrag ioctl(): > - Fix bad behaviour with full rewriting all compressed > extents in defrag range. (that also make autodefrag on compressed fs > not so expensive) > - Allow userspace specify NONE as target compression type, > that allow users to uncompress files by defragmentation with btrfs-progs > - Make defrag ioctl understood requested compression type and current > compression type of extents, to make btrfs fi def -rc<type> > idempotent operation. > i.e. now possible to say, make all extents compressed with lzo, > and btrfs will not recompress lzo compressed data. > Same for zlib, zstd, none. > (patch to btrfs-progs in PR on kdave GitHub). > > 4th patch, reduce size of struct btrfs_inode > - btrfs_inode store fields like: prop_compress, defrag_compress and > after 3rd patch, change_compress. > They use unsigned as a type, and use 12 bytes in sum. > But change_compress is a bitflag, and prop_compress/defrag_compress > only store compression type, that currently use 0-3 of 2^32-1. > > So, set a bitfields on that vars, and reduce size of btrfs_inode: > 1136 -> 1128. > > Timofey Titovets (4): > Btrfs: btrfs_dedupe_file_range() ioctl, remove 16MiB restriction > Btrfs: make should_defrag_range() understood compressed extents > Btrfs: allow btrfs_defrag_file() uncompress files on defragmentation > Btrfs: reduce size of struct btrfs_inode > > fs/btrfs/btrfs_inode.h | 5 +- > fs/btrfs/inode.c | 4 +- > fs/btrfs/ioctl.c | 203 +++++++++++++++++++++++++++++++------------------ > 3 files changed, 133 insertions(+), 79 deletions(-) > > -- > 2.15.1 -- Have a nice day, Timofey. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
